tablet/grub
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

normal: Remove variables hooks on module unload

Browse Source 
The normal module does not entirely cleanup after itself in
its GRUB_MOD_FINI() leaving a few variables hooks in place.
It is not possible to unload normal module now but fix the
issues for completeness.

On the occasion replace 0s with NULLs for "pager" variable
hooks unregister.

Fixes: CVE-2025-0622

Reported-by: B Horn <b@horn.uk>
Signed-off-by: B Horn <b@horn.uk>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
B Horn 2024-11-01 23:46:55 +00:00 committed by Daniel Kiper
parent 2123c5bca7
commit 9c16197734
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
grub-core/normal/main.c
View File

@ -586,7 +586,9 @@ GRUB_MOD_FINI(normal)
grub_xputs = grub_xputs_saved;
grub_set_history (0);
grub_register_variable_hook ("pager", 0, 0);
grub_register_variable_hook ("pager", NULL, NULL);
grub_register_variable_hook ("color_normal", NULL, NULL);
grub_register_variable_hook ("color_highlight", NULL, NULL);
grub_fs_autoload_hook = 0;
grub_unregister_command (cmd_clear);
}